MPD: fs/io/PeekReader.hxx Source File

MPD 0.20.15

PeekReader.hxx
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1 /*
2 * Copyright 2003-2017 The Music Player Daemon Project
3 * http://www.musicpd.org
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 */
19
20 #ifndef MPD_PEEK_READER_HXX
21 #define MPD_PEEK_READER_HXX
22
23 #include "check.h"
24 #include "Reader.hxx"
25 #include "Compiler.h"
26
27 #include <stdint.h>
28
34 class PeekReader final : public Reader {
35 Reader &next;
36
37 size_t buffer_size = 0, buffer_position = 0;
38
39 uint8_t buffer[64];
40
41 public:
42 explicit PeekReader(Reader &_next)
43 :next(_next) {}
44
45 const void *Peek(size_t size);
46
47 /* virtual methods from class Reader */
48 virtual size_t Read(void *data, size_t size) override;
49 };
50
51 #endif
Reader
An interface that can read bytes from a stream until the stream ends.
Definition: Reader.hxx:35
check.h
PeekReader::PeekReader
PeekReader(Reader &_next)
Definition: PeekReader.hxx:42
Reader.hxx
Compiler.h
PeekReader::Read
virtual size_t Read(void *data, size_t size) override
Read data from the stream.
PeekReader::Peek
const void * Peek(size_t size)
PeekReader
A filter that allows the caller to peek the first few bytes without consuming them.
Definition: PeekReader.hxx:34